Cement block.



- 887,211- PATENTED MAY 12, 1908.

J. s. MINTON.

CEMENT BLOCK.

PPPPPPPPPPPP ILBD SEPT. s, 1907.

JOHN S. MINTON, OF KEARNEY, NEBRASKA.

CEMENT BLOCK.-

Specification of Letters Patent.

Patsntedlfiay in, ices;

Application filed September 3, 1907. Serial No. 391,172.

I Zbfa-Zl 'whom it may concern:

Be it known thatl, JOHN S. MrN'roiv, a citizen of the United States, residing at Kean hey, in the county of Buffalo and State of Nebraska, haveinventeda new and useful Cement Block, of which the following is a specification.

This invention relates to artificial stone building blocks and walls constructed from said blocks.

The object of the invention is to provide a wall formed of a plurality of blocks laid in superposed courses and provided with interlocking parts, said blocks being spaced apart vide an artificial stone building brick or b to form a vertical air chamber or flue extending the entire height of the wall.

A further object of the invention is to pro}- oc having one end thereof provided with a terminal hook adapted to engage the hooked end of an adjacent block thereby to prevent spreading of said blocks when the latter are laid into a wall.

.A further object is to form the inner wall of each block with a vertical shoulder and to incline or bevel the hooked end of the adj a cent block at said shoulder so as to facilitate assembling said blocks into a wall and also to permit free circulationof air around the inter locking joints of the several blocks.

A still further object of the invention is generally to. improve thisclass of devices so as to increase their utility, durability and efficiency.

Further objects and advantageswill appear in the following description, it being understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the ap ended claims.

11 the accompanying drawings forming a.

part of this specificationzl igure 1' is a perspective view of one corner of a wall formed of artificial stone building blocks constructed in accordance with my invention. Fig. 2 is a perspective view of one'of the side blocks detached. Fig. 3 is a similar view of one of the corner blocks detached. Similar numerals of reference indicate cor responding parts in all of the figures of the drawings. I

The improved blocli forming the subject matter of the present invention includes an elongated body portion 5 formed of cement, concrete or other plastic material and having one end thereof provided with a lateral pro ]0Ct1011 6.

The pro ection 6 is provided with fiat bearing surface 7 for engagement no.

. the

correspondingly ilat bearing surface 8 of the cg;

reduced end of an adjacent clock, the upper and lower faces'of the body portion being preferably continuous and unobstructed to form smooth bearing surfaces for engage ment with the blocks in the preceding succeeding courses when said blocks are laid into a wall.

The inner face of the project-ion 6 is formed with a substantially l! shaped recess 9 forming a hook 10 which interlocks with the hook of an adjacent block thereby to prevent spreading of said blocks.

The inner face of the body portion of the block is formed with a vertical shoulder 11 preferably disposed at the recess 9 and which allows the air 1n the vertical fines or assages 12 to circulate around the interior: cod portions of the block and thus assist in preventing the moisture from the blocks from passing through the wall and wetting or otherwise soiling the plaster.

The end wall 7 of the projection is inclined or beveled at 13 towards the hook 10 while the outer face of said hook is inclined at 1% in the direction. of the shoulder 11.

The inclined face it serves to assist in guiding the terminal book 10 of one block in engagement with the recess 9 of an adjacent block while the inclined face 13 of the projcction 7 forms an auxiliary air chamber or passage 15 (weach side of the interlocked portions 'of said blocks to permitthe free circulation of air, in the ni'anner before described.

In Fig. 3 of the drawings there is illustrated a corner block 111 which the inclined or beveled face. 13 is dispensed with, the end wall 7 of the lateral projection being iormed with ailat continuous face which constitutes the corner of the wall, as shown.

In constructing a wall, partition or similar structure from the blocks shown in Figs. 2 and 3 of the drawings, said blocks are laid in superposed courses and arranged to break outer faces of the joint with the terminal. hooks 10 of one block and shapes and if desired the exposed sun face of each block may b formed with an orthereof and provided with an inclined face namental face in imltationof chipped or cut intersecting the converging outer face of the rock. hook. Having thus described the invention what In testimony that I claim the foregoing as 15 5 1s claimed is: my own, I have hereto aflixed my signature A building block comprising a body por- 1n the presence of two witnesses.

longitudinally disposed hook, the walls o1- I JOHN MINTON' w ich ccnverge on like angles towards the Witnesses: 10 bill thereof, the inner face of the block being H. A. BARNEY,

thickened towards the hook and one end JAME O. NICHOLS. 

